Sidney Poitier stars as John Kane, a heavenly emissary who pays a visit to the Alabama town where he was born. Making it his mission to purge the community of all hatred and prejudice, "Brother John" is nothing less than the… MoreSidney Poitier stars as John Kane, a heavenly emissary who pays a visit to the Alabama town where he was born. Making it his mission to purge the community of all hatred and prejudice, "Brother John" is nothing less than the Messiah returned to earth. Trouble is, he's black, and it's Alabama-so who's going to pay attention? Will Greer costars as a local town doctor.